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Method, device and server for locating partial discharge source in transformer

A technology of partial discharge and positioning method, which is applied in the direction of testing dielectric strength, etc., can solve the problems of low accuracy of transformers and low accuracy of acoustic signal calculation, and achieve the effect of improving accuracy and optimizing calculation methods

Active Publication Date: 2022-02-01
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

However, due to the influence of various interference factors, the calculation accuracy of the arrival time of the existing acoustic signal is low, which leads to the low accuracy of the positioning method of the partial discharge source in the transformer

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  • Method, device and server for locating partial discharge source in transformer
  • Method, device and server for locating partial discharge source in transformer
  • Method, device and server for locating partial discharge source in transformer

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The insulation system is the main component of the power transformer, and the integrity of the insulation system plays a decisive role in the safe operation of the transformer. The insulation system may have some inherent defects, and failures caused by external stresses such as short circuits, lightning strikes or transients of switching operations may also destroy the insula...

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Abstract

The present invention provides a method, device and server for locating partial discharge sources in transformers, wherein the method includes: collecting acoustic signals generated by partial discharges in transformers through a plurality of acoustic sensors arranged at preset positions of transformers; The acoustic signal corresponding to each acoustic sensor is subjected to noise reduction processing; according to the signal energy or information amount of the acoustic signal after the noise reduction processing, determine the time length for each acoustic sensor to receive the acoustic signal; according to the position and time length of each acoustic sensor , to determine the location of the partial discharge source within the transformer. In the present invention, the time length for each acoustic sensor to receive the acoustic signal is determined based on the reference time point at which each acoustic sensor starts to collect signals at the same time. This relative time method is conducive to optimizing the calculation of the location of the partial discharge source in the subsequent transformer. way, thereby improving the accuracy of the location of the partial discharge source in the transformer.

Description

technical field [0001] The invention relates to the technical field of transformer detection, in particular to a method, a device and a server for locating a partial discharge source in a transformer. Background technique [0002] Partial Discharge (PD) detection is an effective non-destructive method for evaluating the state of an insulation system. On the one hand, partial discharge detection can be used to detect the size and type of partial discharge signal, and on the other hand, it can be used to locate the source of partial discharge. Timely and accurate determination of the location of the partial discharge source will help to detect equipment defects in time, prevent accidents, and help arrange maintenance plans and reduce maintenance costs. [0003] In related technologies, according to the arrival time of the acoustic signal generated by the partial discharge, the position of the partial discharge can be determined in three-dimensional space, that is, the locatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 马驰王伟哲戚祥李彬赵祥龙高涛
Owner STATE GRID SHANDONG ELECTRIC POWER
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